Mechanical refrigeration



` c. C. SPREEN MEcHANIcAL REFRIGERATION Fiied Nov.

5.- 1925 2 Sheets-Shee 1 Oact. 5 1926.

C. C. SPREEN MECHANICAL REFRIGERATION Filed Nov. s, 1925 2 sheets-sheet 2 llllllll IIIIIIIL j Y Attorneys CHARLES C. SPREEN, O-F DETROIT, MIHGAN, ASSIGNOR '.130 KELVINATOR CORPORA- TION, F DETROIT', MIQEIGAN, A. CORPURATION 0F M.'ICHxndll'.`

MECHANICAL REFRIGERATION.

.Appli-cation sied November 5, 1925. semaine. cassa.

My invention relates to mechanical re'- fi-igeration and the" principal object of'myf invention-is to provide new and-improved` ,apparatus for this purpose@ I n the' drawings accompanying this specication and forming a part thereof AI have shown, for purposes of illustratiomoneform which my invention may assume. In these drawings:

Figure 1 is a front elevation of ,this illusla trative embodiment of my invention,

i Figure 21s a section on the linel 2-2 of Figures"1,3, and 4, v

vFigure 3 is a section on the linens-3 of- Figure 2, j

Figure 4 is a rearelevation, while Figure 5 is aA section lon the line 5-5 of Figure 4. 'y i The device shown herein comprises a cabinet 160 having a front wall 174, side walls 169 and 170, a rear vWalll 171,' a top 26, and a partition 175 separating the/.lowest` portion of the cabinetl-GO into 4ai compressor chamber 163 and an extension 161, of a main refrigerated chamber 162 also divided :troni l5 the compressor chamber 163v bythe partition 175. The front wall 1 7 4 is' provided with an aperture extending substantially the entire height of the main refrigerated coinpartment 162 and closed by a door 31land il" with anaperture 82 extending substantially the entire height of the extension refrigerl ated compartment 161 and closed by a door 176. e

Disposed across the top of the refrig erated chamber 162 is a^reifrigerating apparatus 34 consisting of a brine tank 35 containing the usual expansion coil (not shown), an expansion valve 36 controlling the flow oi" compressed refrigerant into the i expansion coil, and` a thermostat B9 positioned within the end turns 40 of the expansion coil. The brine tank is supported in the refrigerated chamber 162 by means of a pair of straps 41 each secured at its upper end 42 to the cabinet top 26 and at its lower end 43 tothe cabinet rear wall 171, and each formed intermediate its ends to embrace the brine tank 35. The expansion valve is supported in part by the duct 44 connecting it with the expansion coil and partly by the vduct 177 leading to the expansion valve 3 6 from the condenser, while the expansion coil end turns are supported in part the duct 46 connecting t ese end turns with the main bodyof the expansion coil and partly by the A-d'l'ic't- 47' leadinv from the expansion coil endtuIns-40 to the intake of the compressor. i

" Disposed about the refrigerating'apparatus 34 is a shield 48 having one edge 49 1'3" abutting 'the sidewall 169, having theoppoor, 51 spaced from the rear wall 1 1 and slighti f ly upturned, having a front portion 52 extendingupwardly in front'of the refrigerating apparatus 34 to the cabinet top 26 and secured to forwardly projecting olsets 53-in the straps 41' and'provided with an aperture 54 affording access therethrough to the ice pans 55 disposed in the central aperture 564 in the brine tank 35, and having a base pory tion 57 connecting-the four edge portions 49, 50,51, and 52, secured to downwardly pro- Jecting offsets 58 in the straps 41, and sloping` downwardly toa central depression coin-l niunicating with a drain duct 59. n

The refrigerant return duct 47, the wires 60 from the switch 38, and the drain duct 59, all enter the upper endofa sheath 61 and pass within this sheath-throupji the refrigerated chamber 162 and partition 175 into the compressor compartment 163 where the refrigerant return duct 47 is connected to the inlet`v178 of a coinpressor164 connected by means .of a duct 190'to the other end of 'the condenser, the wires 60 extend to the motor 165 connected to the compressor 90 164 by means of a belt 166, and the drainy duct 59 extends on through the bottom of the 'cabinet 160. In this embodiment of my inf by the' lower ends of the side Walls 169 and 170 of the cabinet 160, the cabinet-:sides 169 and 17 O are extended rearwardly beyond the cabinet 'rear Wall 171130 provide a line 172 ex- 106 tending up` the back of the cabinet 160 in free communication with both the compres,- sor-chaniber 163 and the space above the cabinet 160, and the condenser coil 173 is positioned within. this iiue 172.

It will be apparent to those skilled in the art that in the embodiment of my invention herein disclosed the various portions of the apparatus are located in a single unitary cabinet and mounted ina manner to secure f i maximum utilization 'of space and at the same time satisfactory operating efficiency,

the shield positioned about the brine tank serves not only as a drip pan to collect condensate but also to induce and assist circulation of the air between the space about the refrigcrating apparatus and the s ace beneath the shield, the embodiment o my invcntion provides an extremely simple form of refrigerating apparatus which can be manufactured at a minimum costl a-n'dmaintained in operation with a minimum of eX- pense, the use of the sheath to house the variouspipes and wires as they ass through the refrigerating chamberY assists in holding these parte in lposition and in maintaining the refrigerated chamber clean, the construction 'of a single member to serve as a drip -pan and to induce circulation permits the omission of one part heretofore necessary, the provision of the shield front plate permits the formation of the cabinetwith a door extending the full height of the main1 refrigerated chamber and thus permits the use of a single door for this purpose rather than the two doors heretofore customary,

f the projection of the side walls of the cabinet insures the spacing of the cabinet from the house wall and the. formation of a flue adapted'to facilitate theow of air `through the compressor compartmentand also provides an eminently satisfactory location for the condenser coil, the divisionofthe lowest. part of the refrigerator provides an eX- tremely cold compartment suitable forthe reception and storage of those articles which must be maintained Very cold, and that this division, and the positioning of the Vcondenser coil in the flue on the back of the cabinet, provide an arrangement of the compressor mechanism whereby the entire mechanism is readily accessible without withdrawing or disconnecting any part of that mechanism.

It will therefore be apparent to those skilled in the art' that the apparatus shown herein embodies a large number of advantages over apparatus heretofore in use, both those advantages which I have specifically It will also be apparent to those skilled llclaim:

1 A refrigerator cabinet comprising lateral wall means and top wall means and partition means defining together a machinery compartment-across the rear 0f the lower portion of said cabinet and a refrigeratin .compartment in the upper portion of sai cabinet and a refrigerated compartment-between said -refrigerating compartment and said machine compartment and also across'k the frontoft e lower portion of said cabinet in front oflsaid machinery com artment, refrigerating mechanismdispose in said machinery com artment, .refrigerating apparatus dispose in said refrigeratng compartment and operatively connected to said refrigerating mechanism, and a door in said lateral wall means affording access to said refrigerated compartment. l

2. 'A refrigerator- .cabinet comprising lateral wallmeans Lan-d tcp virali means and partition-means defining together a machin-v ery compartment .acrossv the rear ofthe lower portion of said cabinet and a refrigerating compartment across thel entire upper portion of saidcabinet and a refrigerated compart ment between said 4refrigerating compart-` ment and said machiner compartment and also across the front of t e lower portion of said cabinet in front of said machinery compartment, refrigerating mechanism disposed in said machinery compartment, refrigerating apparatus disposed in said refrigerating compartment and voperatively connected to said'refrigerating mechanism. and a door in said lateral wall means affording -access to said refrigerated compartment.

3. A refrigerator cabinet comprisin lateral wall means and top wall means and partition means defining together a machinery compartment acrossthe rear of the lower portion of said cabinet and a refrigerating compartment across the entire upper portion of said cabinet and a refrigerated compartment between said refrigerating `comparu ment andsaid machinery compartment andl also across the front of the lower portion of said cabinet in front of said machinery compartment, refrigerating mechanism disposed in said machinery compartment, refrigerating apparatus disposed insaid refrigerating compartment and operativelyl connected to said refrigerating mechanism, and a door in said lateral wall meansaording access to both said refrigerating compartment and said refrigerated compartment.

ln'testimony whereof lf hereunto aiiix my signature. v

orrianiignso. srREEN. 

